Here is a list of all the postings Wesley Souza has made in our forums. Click on a thread name to jump to the thread.
Thread: Surface plate |
25/11/2022 00:46:19 |
Posted by Michael Gilligan on 25/11/2022 00:42:31:
Sorry … I should not have mentioned it I seem to have caused confusion instead of preventing it Obviously time for bed. Zzzzz MichaelG. Sleep well my friend and thank you for your contribution. |
25/11/2022 00:37:15 |
Posted by Michael Gilligan on 25/11/2022 00:09:05:
No, Wesley … what I meant was that you first referred to your tiles as 80cm Then I referred to them as 800mm Then you last wrote 80mm Over here, at least, centimetres are not a ‘preferred unit’ in engineering and science It honestly doesn’t matter though. MichaelG. . Edited By Michael Gilligan on 25/11/2022 00:15:16 Here we use kg, meters and km/h and in the USA they use pounds and inches and mph. |
24/11/2022 23:55:28 |
Posted by Michael Gilligan on 24/11/2022 23:45:02:
No offence intended, Wesley … but let’s try to work consistently in millimetres if we can When your tiles are in the bathroom, centimetres are commonly used, but ‘Engineering’ doesn’t recognise that unit and we poor old things get confused. MichaelG. Sorry my friend, here in Brazil we don't use inches very much, if that's what you mean. Even in engineering we use the meter metric. So, I mentioned that the measurements were around 23" (60x60cm) and (80x80cm) 31". |
24/11/2022 23:34:46 |
Posted by Michael Gilligan on 24/11/2022 23:27:30:
That’s great, thanks Wesley Possibly the best news is that he’s not making 800mm square plates !! I will watch it with interest. MichaelG. . Link: __ **LINK** Edited By Michael Gilligan on 24/11/2022 23:28:28 I also believe that using 80mmx80mm porcelain tiles, despite using a very rigid structure, would not support it and would flex at some point. But I intend to cut it to a smaller size, something around 60x60 or 40x40. Perhaps the fact of saying that I have the piece of such size suggested that I would use the piece in its dimensional totality. |
24/11/2022 23:18:00 |
Posted by Michael Gilligan on 24/11/2022 23:12:41:
Thanks for that, Wesley … it helps a lot If you could post a link to the Youtube channel, I think several of us will be interested to see it. MichaelG.
Here is the channel: https://youtu.be/htzvYEzEzjc
|
24/11/2022 22:12:37 |
Posted by Michael Gilligan on 24/11/2022 21:31:37:
No need to get embarrassed here Wesley … just ask straight questions, with as much background detail as you can, and someone will answer appropriately. My question to you is about your motivation I am still not sure whether you mostly want the end-product, or the exercise of personally demonstrating Whitworth’s process. … I suspect it is a bit of both, but please tell us MichaelG. I follow a Brazilian YouTube channel in which a user is building a homemade lathe without the aid of heavy machine tools. All based on a file, rasket and some small cutting machines. And he instructed me to start with a surface plate so that I could build the guides and every part of the lathe that required a certain precision. Using the withworth method and with three 15mm black granite slabs, he built a surface slab with an accuracy between 0.005mm and 0.01mm and I also wondered if I could reproduce this method using the porcelain tiles I already have available and then use engineer's blue to flatten the lathe guides. An accuracy of .01mm would be fine for me. |
24/11/2022 21:17:08 |
Posted by Rod Renshaw on 24/11/2022 17:36:31:
We don't know where Wesley lives or what accuracy he needs from his "Surface plate", but we now know that he will not find it easy to just "buy a plate" because of import restrictions. So I wonder if we can apply some lateral thinking and suggest something he might find easily in his location that would be flat enough? What about a brake or clutch disc from a car or commercial vehicle? Might such be flat enough? Any other ideas? Rod Hi Rod, thanks for your reply and for your concern. So, I live in Brazil and here imported products are very expensive, very expensive. That's why we try to build things because that's the only way it becomes reality. It is very common here, lathes, milling machines and all kinds of homemade tools. Sometimes it's a little embarrassing to ask questions about how to build something, because people uninformed about the reality I live in always answer: " hey, why don't you buy it?" and "Hey, I went to the used trade and paid cheap" I don't have that cheap option. I went on a website the other day to get answers and an OP started saying about his "amateur" shop.- "I have 3 lathes, 2 milling machines...." I got embarrassed and gave up asking. This is my story😂 |
23/11/2022 23:19:02 |
Posted by Versaboss on 23/11/2022 22:56:19:
Maybe a bit late in this discussion, but there are some things which I find hard to believe. Mr. Souza wrote in his first post that he has porcelain tiles"...from my bathroom remodeling and they are 80 cm x 80 cm..." In another post, he wrote that his tiles have the same thickness as a granite kitchen top. In short, I can't believe that until I can see it, and I wonder why not one of our usual sharp eyes took notice of that. Regards, Edited By Versaboss on 23/11/2022 22:57:23 Hi, here in my country we don't use such thick granite slabs to build sinks or even floor slabs. It is customary to use the 15mm measurement, I believe it is to save raw material. And the porcelain tiles are in a measurement range of 12mm. |
23/11/2022 16:12:45 |
hi guys, I am very grateful for all the contributions, but from what I could see my idea is not usual. I only suggested such a procedure, because in my country the price of a surface plate is not very attractive. The currency is 5 times less than the value of the dollar and our friend the government still charges 60% for imports. Thank you for all your help and I will look for another method or alternative. |
23/11/2022 06:51:58 |
*withworth 3 plates method |
23/11/2022 06:46:58 |
Posted by Michael Gilligan on 23/11/2022 06:06:56:
Posted by Wesley Souza on 22/11/2022 23:08:04:
Posted by Mark Davison 1 on 22/11/2022 22:37:49:
A granite surface plate of that sort of size would be at least 4" thick, probably more. Even my 8"x12" is 4" thick. sorry, I mean the thickness of the granite used in kitchen sink countertops, which, by the way, I've seen used for surface plates. of course, a ribbed bed of flat bars of common steel was used. . May I just insert a note of semantic clarification here ? … call it pedantry if you must ! There is [was] [should-be] a distinction between a Surface Plate and a Marking-out Table On a forum such as this, it is perhaps inevitable that the use of the terms will be ‘fuzzy’ but it doesn’t really help in a discussion like this one. MichaelG. . Edit: __ this might be useful: Edited By Michael Gilligan on 23/11/2022 06:21:44 I don't know if I made myself clear, but my question is about the 3 withworth slabs method and whether porcelain tiles could be used in its construction instead of granite. I am aware of the thickness of the tile and that it could warp and lose precision, but I could use a ribbed metal base. I just wanted to hear the opinion of someone with more knowledge. |
22/11/2022 23:08:04 |
Posted by Mark Davison 1 on 22/11/2022 22:37:49:
A granite surface plate of that sort of size would be at least 4" thick, probably more. Even my 8"x12" is 4" thick. sorry, I mean the thickness of the granite used in kitchen sink countertops, which, by the way, I've seen used for surface plates. of course, a ribbed bed of flat bars of common steel was used. |
22/11/2022 19:45:10 |
Posted by Thor 🇳🇴 on 22/11/2022 18:39:15:
Hi Wesley, Welcome to the forum. Are the porcelain tiles flat? Or do you intend to use the 3 plate method? I know some use plate glass as a cheap surface plate, usually they are made from Cast Iron or granite. Thor Hi Thor, thank you very much for your reply. I was thinking of using the 3 board method. I saw that they are using ceramic and I wondered if I could use porcelain. It has a very similar thickness to the thickness of the granite and I thought I could save money on this step. |
22/11/2022 19:41:04 |
Posted by Master of none on 22/11/2022 19:35:32:
Posted by Bazyle on 22/11/2022 19:25:33:
Really you can only use cast iron because of the way it can be scraped. I'm not sure how other materials would respond. You can grind glass and therefore probably porcelain. Generally tiles of various sorts are gong to be thin and hence flexible so you would want to laminate a few together first. Another possibility is to find a kitchen fitter and see if they will give you the bits they cut out of granite worktops for the sink. These are still too thin to use as is. I agree. Kitchen worktops are probably too thin to give you a relaible surface plate. I can measure slight curve in my granite worktop. See Robin Renzetti's Youtube for lapping a granite surface plate. Thank you very much for your reply. It's just that I have some very thick porcelain tiles and if I'm not mistaken, the thickness is very similar to the thickness of the granite. I was thinking about it! |
21/11/2022 19:53:41 |
hello friends, trying to recreate that famous method of flat surface plates and I was wondering if I could use that porcelain tile that is used for covering floors and walls. I have some left over from my bathroom remodeling and they are 80cm x 80cm. I've heard that ceramics are used as an alternative, would porcelain tiles also be possible? Has anyone thought of this or done it? |
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